box has orange and green balls totaling 82. green is seven more than four times orange. how to solve

Answer 1

G + O = 82

green plus orange = 82

G= 7+ 4O

green = 7 more than 4 times orange

subtract 4O from both sides to get

G-4O = 7 subtract the 1st equation

G+ O =82, -4O-O =-5O, and 7-82 = -75

-5O =-75 divide both sides by -5

O = 15 orange balls

G = 82-15 = 67 green balls

check the answer

67=7+4(15) =7+60 = 67